The Four-Month Fetus Anatomy Model Activity Set is an anatomy activity set from American Educational Products and manufactured in the United States. This anatomy set features realistic life-sized models of the embryo/fetus at 6, 8, 10, 12, and 14 weeks that are sequenced next to the 16 week fetus within a model of the womb. The set illustrates the size, physical features, and positioning of the embryo/fetus. This activity set is best used as a graphic instructional aid on reproduction. The Four-Month Fetus Anatomy Model Activity Set is 24.0 x 17.7 and weighs 2.20 lbs.